期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 49, 期 7-8, 页码 1358-1374出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2005.10.002
关键词
laser drilling; analytical model; melt ejection; drilling rate; laser oxidation; exothermic reaction
An analytical model is presented which incorporates the effects of using O-2 as assist gas. The contribution of the enthalpy of oxidation used in the model was determined experimentally by capturing the ejected melt and measuring the volume percentage of oxidation. The formulation of recoil pressure used in the model takes into account. hole diameter and depth, and the associated pressure variation. The model presented also considers pulse width which is shown to affect the drilling velocity. The model enables the prediction of the velocity of melt ejection, and the drilling rate, as well as the contributions of melt ejection and vapourisation to the overall drilling rate. The calculated drilling rates are in close agreement with the experimental results. (c) 2005 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据